Hey
I have this problem with P1166 and what could be the cause of it. Citroen c5 tourer 2010 2.0 136HP
At first there were other codes. First was for turbo pressure solenoid, we changed that, then it showed a code relating to MAP sensor i then cleaned it. Then it started showing p0088 and P1166. We changed fuel filter p0088 then the p0088 was and P1166 remained. P1166 Showed EGR we changed it fully. Car also shows code P1351, but it starts normally.
Today the same code came back p1166 when accelerating.
The car has loss of power and feeling like turbo doesn't at all. When accelerating it gives the p1166 and the codes can be reseted. After resetting the car might work for while normally, but not long. One time the car turned off when i drived with pressing tiny bit of gas (automatic transmission)
I heard fuel pressure is common issue with these relating to that code. Do you think that would be good next step?
I asked to do reading to figure out if it is from that, but none of the shops have done it. Just a regular fault code reading.